CN109143342B - Seismic exploration wireless acquisition data fusion method - Google Patents
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Abstract
The invention discloses a method for fusing wireless acquisition data of seismic exploration, which comprises the steps of downloading data, storing the data according to the serial number of a wireless node instrument, cataloging the downloaded data, establishing an index, acquiring the associated attribute information of a seismic source point and the wireless node instrument, intercepting effective data, establishing a seismic data file and filling the effective data. Aiming at the characteristics of large quantity of data acquired by a wireless node instrument, large volume and large quantity of invalid data, the invention adopts the methods of continuous data recording, sectional GPS time saving, directory file providing and unified earthquake time intercepting, can quickly position the required data in huge data, improves the searching efficiency by several times, and does not obviously increase the time for searching the data along with the continuous acquisition of the number of tracks.
Description
Technical Field
The invention belongs to the technical field of seismic exploration, and particularly relates to a wireless acquisition data fusion method for seismic exploration.
Background
Seismic exploration (Seismic exploration) refers to a geophysical exploration method in which elastic waves caused by artificial excitation utilize differences in elasticity and density of a subsurface medium, and properties and forms of a subsurface rock stratum are inferred by observing and analyzing the propagation law of Seismic waves generated by artificial earthquake in the ground. Seismic exploration is the most important method in geophysical exploration and is the most effective method for solving the problem of oil and gas exploration. It is an important means for surveying petroleum and natural gas resources before drilling, and is widely applied to the aspects of coal field and engineering geological exploration, regional geological research, crust research and the like.
Seismic exploration utilizes a geophone to observe wave impedance difference between rock layers in a specific mode, and further researches underground geological problems. The geophone is a device (sensor) for converting ground mechanical vibration signals excited by an artificial seismic source into electric signals in seismic exploration operation, and is the first link of seismic wave receiving. The seismic instrument is core equipment for actually recording return ground seismic signals, and not only is the useful seismic signals not lost, but also the interference signals are required to be fully sampled so as to be beneficial to suppression in the field or indoors.
The seismic data acquisition is the first process and the most important process in oil and gas seismic exploration engineering, and equipment, namely a seismic signal receiving and recording system, is required to be used in the process. Conventionally, a device for sensing seismic signals is called a geophone, and a device for acquiring and recording seismic signals is called a seismic exploration instrument (or seismic (recording) instrument), which is a key equipment. The geophone and the seismic exploration instrument always need to work together to realize the complete seismic data acquisition function, namely, the geophone and the seismic exploration instrument are inseparable and integral in function. From the perspective of the system, and in order to meet the needs of development, seismic signal sensing and acquisition devices, which mainly comprise geophones and seismic prospecting instruments, are collectively called a seismic data acquisition system (acquisition system for short).
Along with the design and application of a high-coverage over ten thousand-channel observation system, the sliding scanning of a controllable seismic source, the popularization and application of high-efficiency acquisition operation modes such as ISS (independent Simultaneous sweep), DS3, HFVS (high Fidelity visual similarity sensor) and the like, the conventional acquisition instrument has a bottleneck in meeting production requirements, and therefore wireless node acquisition equipment is born. The wireless node acquisition equipment is a novel seismic instrument which can be used for continuously recording long records, has the advantages of randomly expanding acquisition channels, being convenient to arrange and arrange, and being suitable for various operating environments. The large track number capability of the instrument is an indispensable index of a future seismic data acquisition instrument, and the node type seismic instrument well avoids the limitations of the conventional wired instrument host on the track carrying capability, data transmission and the like and breaks through the limit of the large track number of the wired instrument. Wireless node instrumentation is rapidly moving towards stable systems and longer continuous acquisition capabilities, and in recent years the increasing share of wireless acquisition instruments in the exploration market will likely replace wired acquisition instruments in the future.
The current geophysical exploration puts higher and higher requirements on huge acquisition tracks, high-performance digital detection units, complex arrangement and layout and the like, the wireless node instrument blindly acquires data, the acquired data has the characteristics of large quantity, large volume and large invalid data, a higher test is put on a data fusion system, and the problem that how to quickly search the required data in a short time is the problem of being placed in front of the wireless node instrument is solved.
Disclosure of Invention
The invention aims to: in order to solve the problems in the prior art, the invention provides a seismic exploration wireless acquisition data fusion method.
The technical scheme of the invention is as follows: a seismic exploration wireless acquisition data fusion method comprises the following steps:
A. downloading the data uploaded by the wireless node instrument to the local, and storing the downloaded data according to the serial number of the wireless node instrument;
B. b, cataloguing the data downloaded in the step A and establishing an index;
C. acquiring association attribute information between the seismic source point and the wireless node instruments from the observation system file to obtain the serial numbers of all the wireless node instruments associated with each seismic source point;
D. according to the excitation sequence of the seismic source points, intercepting effective data from data files corresponding to all wireless node instruments associated with the seismic source points in sequence according to the catalogues compiled in the step B and the established indexes;
E. and D, establishing a seismic data file according to the excitation sequence of the seismic source points, and filling the effective data intercepted in the step D into the seismic data file.
Further, the step a of storing the downloaded data according to the number of the wireless node device specifically includes: and cutting the downloaded data according to a set interval time, storing the cut data as a data file, and naming the data file by using the GPS time of the first point of data sampling in the file.
Further, the step B cataloguing and indexing the data downloaded in the step a specifically includes: generating a directory file under a root directory, and saving the file name of the data file as the directory; and setting a unique number for each wireless node instrument at the same time, setting a unique directory file under each number, and writing the path, file name, sampling rate and data state of the data file into the directory file.
Further, the observation system file in the step C includes information of a seismic source point, information of a wireless node instrument, and association attribute information between the seismic source point and the wireless node instrument.
Further, in the step D, the excitation sequence of the seismic source points is specifically obtained from the seismic source point excitation log file according to the excitation sequence of the seismic source points, and then the excitation time of the seismic source points is converted into GPS time to obtain the excitation sequence of the seismic source points.
Further, the seismic source point excitation log file comprises the number, time, date, coordinates and seismic source point excitation state information of the seismic source point excitation.
Further, the step D of intercepting the valid data according to the directory compiled in the step B and the established index specifically includes the following sub-steps:
d1, acquiring the starting time of the data file in the directory file;
d2, judging whether the excitation time of the seismic source point is within the recording time range of the data file; if yes, carrying out the next step; if not, sequentially searching the starting time of the next data file according to the time sequence;
d3, judging whether the remaining duration of the data file from the excitation time of the seismic source point meets the duration requirement; if yes, intercepting effective data meeting the time length requirement; if not, sequentially searching the next data file according to the time sequence, intercepting two sections of data meeting the time length requirement from the two data files, and splicing the two sections of data to form effective data meeting the time length requirement.
The invention has the beneficial effects that: aiming at the characteristics of large quantity of data acquired by a wireless node instrument, large volume and large quantity of invalid data, the invention adopts the methods of continuous data recording, sectional GPS time saving, directory file providing and unified earthquake time intercepting, can quickly position the required data in huge data, improves the searching efficiency by several times, and does not obviously increase the time for searching the data along with the continuous acquisition of the number of tracks.
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FIG. 1 is a schematic flow diagram of a method of the present invention for fusing wireless acquisition data for seismic exploration;
fig. 2 is a schematic diagram of a software structure in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
FIG. 1 is a schematic flow chart of the method for fusing wireless acquisition data of seismic exploration according to the present invention. A seismic exploration wireless acquisition data fusion method comprises the following steps:
A. downloading the data uploaded by the wireless node instrument to the local, and storing the downloaded data according to the serial number of the wireless node instrument;
B. b, cataloguing the data downloaded in the step A and establishing an index;
C. acquiring association attribute information between the seismic source point and the wireless node instruments from the observation system file to obtain the serial numbers of all the wireless node instruments associated with each seismic source point;
D. according to the excitation sequence of the seismic source points, intercepting effective data from data files corresponding to all wireless node instruments associated with the seismic source points in sequence according to the catalogues compiled in the step B and the established indexes;
E. and D, establishing a seismic data file according to the excitation sequence of the seismic source points, and filling the effective data intercepted in the step D into the seismic data file.
In an optional embodiment of the present invention, in the step a, the data uploaded by the wireless node apparatus is downloaded to the local, the file being downloaded is marked in a special format, and the data file is restored to a normal format after the downloading is completed; and then the downloaded data is stored according to the serial number of the wireless node instrument, which specifically comprises the following steps: and intercepting the downloaded data according to a set interval time, storing the intercepted data as a data file, and naming the data file by sampling the GPS time of a first point of the data in the file, which is also the starting time of file recording.
In an optional embodiment of the present invention, the step B catalogues and establishes an index for the data downloaded in the step a, specifically: generating a directory file under a root directory, and saving the file name of the data file as the directory; and setting a unique number for each wireless node instrument at the same time, setting a unique directory file under each number, and writing the path, file name, sampling rate and data state of the data file into the directory file. The directory file contains a list of file names of all data transmitted back by the wireless node instruments with the numbers, and the list is arranged from small to large according to the time sequence.
In an optional embodiment of the present invention, in step C, an observation system file is first read, where the observation system file includes information of a seismic source point, information of a wireless node instrument, and associated attribute information between the seismic source point and the wireless node instrument; and acquiring the number and the coordinate of the seismic source point, the number and the coordinate of the wireless node instrument and the attribute associated between the wireless node instrument and the seismic source point from the observation system file, acquiring the numbers of all the wireless node instruments associated with each seismic source point, and storing the information into the attribute of the seismic source point.
In an optional embodiment of the present invention, in step D, the seismic source point excitation log file is first read, where the seismic source point excitation log file includes information of the number, time, date, coordinates, and seismic source point excitation state of the seismic source point excitation; the accurate time of the seismic source point excitation is obtained from the seismic source point excitation log file, the time is converted into GPS time, and in the process of converting the GPS time, leap second information needs to be supplemented, so that the time can be ensured to be accurate.
According to the excitation sequence of the seismic source points, firstly acquiring the number of the excited seismic source points, firstly finding all wireless node instruments monitoring the seismic source points from the seismic source, acquiring the numbers of the wireless node instruments, sequentially searching directory files of downloaded data according to the numbers, opening the directory files under a data file directory, indexing the data files and intercepting the data, and specifically comprising the following steps:
d1, acquiring the starting time of the data file in the directory file;
d2, judging whether the excitation time of the seismic source point is within the recording time range of the data file; if yes, carrying out the next step; if not, sequentially searching the starting time of the next data file according to the time sequence;
d3, judging whether the remaining duration of the data file from the excitation time of the seismic source point meets the duration requirement, namely whether the remaining duration of the data file from the excitation time of the seismic source point to the cutoff time is greater than the set duration requirement; if so, intercepting effective data required by the duration from the excitation time of the seismic source point in the data file; if not, sequentially searching the next data file according to the time sequence, intercepting two sections of data with time length requirements from the excitation time of the seismic source point in the two data files, and splicing the two sections of data to form effective data meeting the time length requirements.
In an optional embodiment of the present invention, in the step E, the seismic source point excitation log is read, and a seismic data file is created according to the order of exciting the seismic sources, where the created seismic data file includes necessary information, such as the number of the seismic source point, coordinate information, excitation time, and the like; information such as the number and coordinates of the wireless node instrument associated with the seismic source point; but does not contain the data collected by the wireless node instrument. And D, after the seismic data file is established, sequentially filling the effective data intercepted in the step D into the seismic data file.
In order to further explain the method for fusing wireless acquisition data for seismic exploration, a software structure corresponding to the method for fusing wireless acquisition data for seismic exploration is explained below.
The software structure corresponding to the seismic exploration wireless acquisition data fusion method comprises a data layer, an associated information attribute layer and a time management layer. Fig. 2 is a schematic diagram of a software structure in the embodiment of the present invention.
The data layer is the core part of the whole scheme and is responsible for managing the data returned by the wireless node instrument, including identifying and sorting the data in the transmission process; adding attributes and labels to the transmitted data; sorting the transmitted data; adding a catalogue operation to the data; and indexing the data file by time and number, and the like.
And the associated information attribute layer is responsible for managing the seismic source point information, the wireless node instrument information and the attributes associated between the seismic source point information and the wireless node instrument information. The related information attribute layer reads the number, the file number, the coordinate information and the like of the seismic source point from the observation system file; the number and coordinate information of the wireless node instruments, the number and number information of the wireless node instruments associated with each seismic source point, and the like.
The time management layer is responsible for managing the time information of the system, and comprises the steps of reading the seismic source excitation time (the time can be Beijing time, UTC time or GPS time, and the time management layer is responsible for unifying the time format and facilitating calling) from a log file for exciting the seismic source, reading the number of the excitation seismic source and delivering the number to the associated information attribute layer.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (6)
1. A seismic exploration wireless acquisition data fusion method is characterized by comprising the following steps:
A. downloading the data uploaded by the wireless node instrument to the local, and storing the downloaded data according to the serial number of the wireless node instrument;
B. b, cataloguing the data downloaded in the step A and establishing an index;
C. acquiring association attribute information between the seismic source point and the wireless node instruments from the observation system file to obtain the serial numbers of all the wireless node instruments associated with each seismic source point;
D. and B, intercepting effective data from data files corresponding to all wireless node instruments associated with the seismic source points in sequence according to the excitation sequence of the seismic source points and the catalogues compiled in the step B and the established indexes, wherein the method specifically comprises the following steps:
d1, acquiring the starting time of the data file in the directory file;
d2, judging whether the excitation time of the seismic source point is within the recording time range of the data file; if yes, carrying out the next step; if not, sequentially searching the starting time of the next data file according to the time sequence;
d3, judging whether the remaining duration of the data file from the excitation time of the seismic source point meets the duration requirement; if yes, intercepting effective data meeting the time length requirement; if not, sequentially searching the next data file according to the time sequence, intercepting two sections of data meeting the time length requirement from the two data files, and splicing the two sections of data to form effective data meeting the time length requirement;
E. and D, establishing a seismic data file according to the excitation sequence of the seismic source points, and filling the effective data intercepted in the step D into the seismic data file.
2. The method for fusing seismic exploration wireless acquisition data as claimed in claim 1, wherein the step a of storing the downloaded data according to the serial number of the wireless node instrument specifically comprises the steps of: and cutting the downloaded data according to a set interval time, storing the cut data as a data file, and naming the data file by using the GPS time of the first point of data sampling in the file.
3. The method for fusing wireless acquisition data for seismic exploration according to claim 2, wherein step B catalogues and indexes the data downloaded in step a are specifically: generating a directory file under a root directory, and saving the file name of the data file as the directory; and setting a unique number for each wireless node instrument at the same time, setting a unique directory file under each number, and writing the path, file name, sampling rate and data state of the data file into the directory file.
4. The method for fusing wireless acquisition data of seismic exploration according to claim 3, wherein the observation system file in step C comprises information of a seismic source point, information of a wireless node instrument, and information of an association attribute between the seismic source point and the wireless node instrument.
5. The method for fusing wireless acquisition data for seismic exploration according to claim 4, wherein the step D comprises acquiring the excitation time of the seismic source points from the seismic source point excitation log file according to the excitation sequence of the seismic source points, and converting the excitation time of the seismic source points into GPS time to obtain the excitation sequence of the seismic source points.
6. The method of fusing wireless acquisition data for seismic exploration according to claim 5, wherein said seismic source shot log file comprises seismic source shot number, time, date, coordinates, seismic source shot status information.
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| CN111142154A (en) * | 2020-01-03 | 2020-05-12 | 深圳面元智能科技有限公司 | Distributed seismic data acquisition method and acquisition system |
| CN113672585A (en) * | 2020-05-13 | 2021-11-19 | 中国石油天然气集团有限公司 | Excitation point data processing method and device for seismic exploration |
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| US20140307523A1 (en) * | 2013-03-15 | 2014-10-16 | Wireless Seismic, Inc. | Buried array wireless exploration seismic system |
| CN104122586B (en) * | 2013-04-24 | 2017-02-08 | 中国石油集团东方地球物理勘探有限责任公司 | Wireless node data monitoring method of seismic exploration |
| US20160011324A1 (en) * | 2014-07-11 | 2016-01-14 | Sercel | Method For Harvesting Seismic Data And Generating Seismic Output Files |
| CN104181583B (en) * | 2014-08-22 | 2017-05-17 | 吉林大学 | Distributed data recovery method for wireless storage type seismometer |
| CN104570061A (en) * | 2015-01-12 | 2015-04-29 | 中国石油集团东方地球物理勘探有限责任公司 | Seismic exploration wireless monitoring node and monitoring method and system based on same |
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| CN106777060B (en) * | 2016-12-09 | 2020-05-19 | 合肥国为电子有限公司 | Node type seismograph data file management system and method |
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